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How to reprogram car key For Cars Automotive specialists or locksmiths are typically the ones who re-program keys to cars. They can take your old working key and use a special tool to program a new one for your vehicle. This involves changing the chip inside your replacement key to ensure that it is compatible with the current settings on your vehicle. Some manufacturers make this easy, while others require a locksmith or dealer. Self-Programming As car technology has evolved over the years, the ignition keys have also evolved as well. Gone are the days of simple mechanical keys that were made at the hardware store for less than $10. Modern models come with computers that are enhanced security against theft. These cars require a transponder-chip integrated key to be programmed by a professional locksmith car dealer or mechanic in order to function properly. Professional locksmiths can carry out various types of programming for keys to cars. Some are very complex and require sophisticated tools. These tools aren't usually available to the public and are used only by professionals. This type of key programming is called EEPROM Programming. It requires soldering skills, electronic knowledge and a lot time. Other forms of car key programming are much easier and can be accomplished by the average person. These are usually done by using the onboard diagnostics port which is accessible with a special key-fob-programming tool. Locksmiths can execute this procedure with the help of an online guide and the owner's manual. Locksmiths with experience can program a brand new or replacement car key fob swiftly and precisely. This is the best option for car owners as they can offer a wide range of services. They can also offer an affordable price and peace of mind that the new key will function properly. Be aware that most vehicles only accept one programmed car key. If you're trying to save money, it might be a better idea to purchase a working spare key fob and have it programmed by an auto locksmith. You can be sure the new key will function and is programmed for your car. You'll need to pay the dealer for programming and replacement keys if you don't. Key Programmers Modern cars often require a key programming procedure to set up the car's system and allow the car to begin. In certain instances the key will have to be programmed by an auto locksmith or a dealer. The key may not work properly or not start the car in any way. This is because the key hasn't yet been programmed into the car's system. This can be expensive. It's best to have two keys that work with your current car so you can program the replacement key if required. A keyprogrammer can recode the transponder chip on an entirely new mechanical key or key fob. It is also able to copy the data of an existing key and allow duplicate keys to be created. These devices are handheld units that connect to the car's On-Board Diagnostics (OBD) port. They come with diagnostic software, which allows them to communicate with computers. They also feature a bidirectional user interface for working with an immobilizer system. There are a myriad of types of keyprogrammers available on the market. They are available in a variety of sizes, shapes and colors. Some are inexpensive, while others can cost thousands of dollar. Some are designed for specific types of cars and provide advanced diagnostics for the vehicle's electronic systems. If you want to program the new key into your vehicle, check the owner's manual to learn how to do it. Certain manufacturers have proprietary software that allows only dealers to create new keys. Other manufacturers make it easy for anyone to do. If you're not able to program a new key by yourself, you can ask the dealership to do it for you, however it will cost a lot. You can also purchase a keyprogrammer from the internet. They are cheaper than visiting a dealer, but still not inexpensive. Make sure you investigate the seller prior to purchasing one – some are not reliable and can damage your vehicle. Transponder Chips If your car is made in the past 20 years, then it has a transponder chip inside of it. It's a small piece of plastic on the back of your key which contains an RFID (Radio Frequency Identification) chip with a unique code for your specific vehicle. When it is activated by an electromagnetic field the chip emits a low level signal. The signal is then taken up by an antenna attached to the barrel of ignition. The computer system in the vehicle will then confirm that the transponder chip of the key is the right one for your car. This is what stops doing hot-wiring or altering the vehicle's ignition system to start it. The chip inside the key confirms that the owner is the person who is the owner of the vehicle. This will help reduce car theft. Transponder keys look like regular keys made of metal, but with a plastic cap. The chip is contained in the plastic portion of the key, and there are a few different kinds of cuts available on these keys: a regular standard cut, a laser cut (also known as a sidewinder key), or a Ford Tibbe key. The circuit in the induction coil emits signals when the transponder is placed in the ignition barrel. The signal will be taken up by the chip, causing it to send a signal back to the car. If the computer on the car detects this signal as the right one, it will shut down the vehicle immobilizer and allow the engine to begin. If programming car key doesn't recognize the transponder as being the proper signal, it will not start the engine and warn you with flashing lights and a siren. This feature is designed to deter people from trying to alter the vehicle, however it isn't a foolproof security measure. A skilled and determined thief may still be able to bypass this system by using a device that can take over the signal. You can see that the transponder is a good option. All car owners must take this into consideration in order to safeguard their investment and decrease theft risk. Key Fobs In addition to locking and unlocking doors, starting the car remotely, or making sound chirps to help locate the car in a parking space Key fobs today can also turn on the heated steering wheel or open all windows with a single button push. These extra features can make it difficult for you to locate your car keys. Key fobs make use of radio frequencies to connect with one another and the car. These frequencies are sent via a small antenna that is located within the middle of the key. The signal is encrypted to block other key fobs from stealing or modifying the signal. You can program a keyfob in different ways based on the model and brand of your vehicle. It is possible to do this yourself, however most modern vehicles require a dealer or professional locksmith to program a replacement or a second fob. When you press the button on a key fob the microchip sends a signal to the receiver in the car with which it is paired. The receiver compares this information with the signals that are allowed on the fob and either opens or locks the door. If the information isn't in line, a chirping sound is heard and the car isn't able to operate. Once the car is linked with a specific fob, it will only accept signals from the device that is associated with it. As a result, other fobs won't work with the vehicle even though they appear similar. This safeguards the integrity of the computer system that runs the vehicle and stops unauthorized key fobs gaining control over it. The majority of newer dealers will only work on a car with original fobs or genuine replacements that are sold by the manufacturer. This is because preparing the replacement fob is a process that requires technological and security expertise which can only be obtained in the dealer's service department. However, some fobs from the aftermarket that are typically designed for older models with less sophisticated systems — can be programmed by the consumer without the need of a dealership.